Cop gets a guilty on terrorist, terrorist blows up cop on his way out? It's just bullshit that way. So the cop thing is not dumb, but very much needed.
Well as I said before the effect is pretty unfair, like how a gallis can make lylo a mafia-autowin, but I see you added that cop investigation thing and that should work perfectly to stop a hunter-like "kill someone as I go out" thing. well done